article: Joe, an outgoing girl, is from a rich family. Therefore she can afford almost everything. But Joe's parents are too busy to spend enough time with her, which makes Joe more than lonely. So, she always goes to WeChat. On WeChat, she can do a lot of things like buying things, reading articles, and making friends with those she either knows or not.
  She uses the name Linda on WeChat and has made a lot of friends there. Last year Joe made a foreign friend on WeChat. Her name was Catherine and she lived in Sydney. Catherine once sent a picture of "herself": a tall, good-looking young woman with big eyes. Catherine and Joe were both interested in rock music and modern dance. So, they liked each other very much.
  When Joe's father told her that he was meeting a client in Sydney this summer, she went with him to give Catherine a surprise for her birthday. When Joe came to Catherine's house in Sydney, she found that her foreign "girlfriend" was a ten-year-old boy named Jim! What a surprise!
question: From this article, we can say  _  .
options: Everyone uses his real name on WeChat On WeChat, we can only talk with Chinese people. On WeChat, we can talk with Chinese people in Australia. Joe's father went to Sydney to meet Joe's friend Catherine.